number.wiki
Number

1,040

1,040 is a composite number, even, a calendar year.

Abundant Number Harshad / Niven Year

Properties

Parity
Even
Digit count
4
Digit sum
5
Digital root
5
Palindrome
No
Divisor count
20
σ(n) — sum of divisors
2,604

Primality

Prime factorization: 2 4 × 5 × 13

Divisors & multiples

All divisors (20)
1 · 2 · 4 · 5 · 8 · 10 · 13 · 16 · 20 · 26 · 40 · 52 · 65 · 80 · 104 · 130 · 208 · 260 · 520 · 1040
Aliquot sum (sum of proper divisors): 1,564
Factor pairs (a × b = 1,040)
1 × 1040
2 × 520
4 × 260
5 × 208
8 × 130
10 × 104
13 × 80
16 × 65
20 × 52
26 × 40
First multiples
1,040 · 2,080 · 3,120 · 4,160 · 5,200 · 6,240 · 7,280 · 8,320 · 9,360 · 10,400

Representations

In words
one thousand forty
Ordinal
1040th
Roman numeral
MXL
Binary
10000010000
Octal
2020
Hexadecimal
410

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1040, here are decompositions:

  • 7 + 1033 = 1040
  • 19 + 1021 = 1040
  • 31 + 1009 = 1040
  • 43 + 997 = 1040
  • 73 + 967 = 1040
  • 103 + 937 = 1040
  • 157 + 883 = 1040
  • 163 + 877 = 1040

Showing the first eight; more decompositions exist.

Unicode codepoint
А
U+0410
Uppercase letter (Lu)

UTF-8 encoding: D0 90 (2 bytes).

Lookup U+0410 on Compart ↗ Lookup on FileFormat.Info ↗
Hex color
#000410
RGB(0, 4, 16)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.4.16.